EP0839621A2 - Use of foils of recycling material for preparing adhesive taps - Google Patents

Use of foils of recycling material for preparing adhesive taps Download PDF

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Publication number
EP0839621A2
EP0839621A2 EP19970117440 EP97117440A EP0839621A2 EP 0839621 A2 EP0839621 A2 EP 0839621A2 EP 19970117440 EP19970117440 EP 19970117440 EP 97117440 A EP97117440 A EP 97117440A EP 0839621 A2 EP0839621 A2 EP 0839621A2
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EP
European Patent Office
Prior art keywords
adhesive
film
recycling material
adhesive tape
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19970117440
Other languages
German (de)
French (fr)
Other versions
EP0839621A3 (en
Inventor
Gerhard Wulf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beiersdorf AG
Original Assignee
Beiersdorf AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beiersdorf AG filed Critical Beiersdorf AG
Publication of EP0839621A2 publication Critical patent/EP0839621A2/en
Publication of EP0839621A3 publication Critical patent/EP0839621A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/005—Tarpaulins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/007—Narrow strips, e.g. ribbons, tapes, bands
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the invention relates to the use of a film, which consists of recycled materials, for the production of an adhesive tape, as well as the actual manufacturing process of the adhesive tape.
  • DE 40 20 602 C1 describes a process with which thermoset PUR soft foam waste is reprocessed.
  • the soft foam wastes are first fed to a mill, comminuted in a lens form in this mill and then compressed under pressure and elevated temperature to tear-resistant films without the addition of a polymeric binder.
  • Such films are used for airborne sound insulation in noise-laden rooms or structure-borne noise insulation in vehicle bodies and as inlays in acoustic spring-mass systems.
  • these foils as carrier material for adhesive tapes is not suggested.
  • EP 0 430 199 A2 discloses a method in which the plastic waste which is more or less strongly coated with adhesive is comminuted in the presence of a liquid which does not dissolve the adhesive, and the waste particles separated from the liquid be adjusted to such a residual liquid content that separation of the particles from one another is still possible.
  • the free-flowing mixture of thermoplastic waste material preferably consists essentially of chips which have a liquid content of 0.5 to 5% by weight. Subsequently, the processing of the chips is proposed, for example in extruders, calenders or injection molding machines, after the adhesive has been removed beforehand.
  • WO 92/09413 likewise discloses a method for recycling plastic films coated with adhesive, the films first being transferred into a chip shape and then a separation of the plastic material and the adhesive being provided.
  • the film chips are first introduced into a solvent bath in which they are rolled or kneaded. Then the adhesive dispersed in the solvent is separated from the film chips by the action of squeezing forces.
  • recycling material plastic films coated with adhesive
  • Such residues arise in the production of adhesive tapes, for example the edge strips which are produced when the mother rolls are cut into salable units, or faulty batches due to an error in the production process.
  • Such recycling materials are also generated when using the adhesive tapes, whether as waste or as remnants on a roll.
  • These adhesive tape sections can be dirty after use, but they can also be in pure form.
  • Waste is the self-adhesive film used in the automotive industry, which protects parts of the vehicle against external influences during transport.
  • Such films usually have a carrier based on a plastic film. After reaching the destination, the vehicles are freed from the foils, which are accumulated in large quantities and then have to be disposed of.
  • the invention has for its object to show a way to materially recycle the residues mentioned in a way that takes into account the special properties of these.
  • This object is achieved by using a film as set out in claim 1 as a carrier material for an adhesive tape.
  • Advantageous embodiments of the adhesive tape are the subject of the dependent claims.
  • the film used to produce the adhesive tape which is at least self-adhesive on at least one side, consists of at least 10% by weight of recycling material.
  • the recycling material is composed of adhesive tapes, production residues from their manufacture and adhesive tapes after their use, the adhesive tapes each having a carrier in the form of a plastic film.
  • the recycled material can also contain a maximum of 25% by weight of production residues from the manufacture of plasters.
  • uncoated plastic films can also be added to the recycling material.
  • the latter in particular allow the physical properties of the film to be set in a targeted manner through the selection and composition.
  • the second constituent of the films which may be present in addition to the recycling material mentioned, is formed from pure, non-recycled granules of the polymers listed, a specific mixing and selection being possible depending on the later intended use of the adhesive tape.
  • a further improvement in the properties of the film, in particular the strength, is achieved by stretching the film in the longitudinal direction, preferably in the range from 1: 2 to 1:10, and by adding UV stabilizers and / or antioxidants to the film.
  • Coextrusion with additional layers can also increase strength.
  • the above-mentioned materials for coextrusion are Raw materials, possibly used with the help of adhesion promoters.
  • the method for producing an adhesive tape according to the invention is also encompassed by the inventive concept.
  • the recycling material is first crushed into an agglomerate in a hot agglomeration by means of a plastic agglomerator, and then the agglomerate is extruded into a film.
  • the extrusion is preferably carried out in a twin screw extruder performed with at least one degassing station.
  • the twin-screw extruder the second component of the film which may be necessary is also added in the form of pure, non-recycled granules.
  • the number of degassing stations - preferably one to three - depends on the amount of adhesive that is applied to the respective films of the recycling material.
  • the amount of exhaust gas generated and the amount of exhaust gas to be disposed of depends on this amount.
  • the adhesive tapes according to the invention can also have primers to improve the adhesiveness of the adhesives.
  • a primer can be omitted because of the residual stickiness of the film.
  • the other backing side can be provided with release lacquers, which protect the film surface and facilitate the unrolling of the tape.
  • release lacquers protect the film surface and facilitate the unrolling of the tape.
  • a release paper is used to ensure that the adhesive tape can be unrolled again.
  • Color batches and / or coextrusion processes can be used to color the backing film of the adhesive tapes.
  • a surface pretreatment (corona, flame or plasma pretreatment) is also provided to better anchor the listed coating materials - including printing inks.
  • the processing parameters (extrusion temperature, cooling, stretching and fixing conditions) for the different material compositions are specified for each mixture. The data necessary for this is determined in experiments with the aim of reproducibility.
  • the films according to the invention are preferably suitable for the production of adhesive tapes which have low optical requirements. It is preferably used as packaging adhesive tapes, carpet laying tapes, masking tapes, tear strips and carrying handles.
  • Films that are produced from the production residues listed are excellently suitable as carriers for adhesive tapes, which was also unforeseeable for the person skilled in the art.
  • the properties of the new film can be specifically adjusted depending on the type and quality of these adhesive tapes. This goes hand in hand with the fact that the quality of the new adhesive tape is also directly influenced.
  • films that consist of 100% by weight of recycled material can also be used as carriers, especially if the later requirements for the product are not too high.
  • the adhesive tape according to the invention can itself be recycled again.
  • Residues from adhesive tape production coated with adhesive were crushed by means of a plastic agglomerator in hot agglomeration to a free-flowing and meterable agglomerate.
  • a device from Pallmann in Zweimaschinen was used for the implementation, which consists of a granulator (type PS 4-5 / F WR 3), a plastic agglomerator (type PFV9 and a hot granulator (type PS 4-5 / F 5 S)).
  • the carrier material for the products mentioned was formed from a polypropylene film made from copolymers, the coating consisted of solvent-based adhesives based on natural rubber and synthetic hydrocarbon resins.
  • the agglomerate was extruded into a film.
  • a twin-screw extruder (type D2 - 72-18 17V from esde in Bad Oeynhausen) with a degassing station was used, the latter being operated with negative pressure.
  • the degassing became necessary because parts of the adhesive, the residual solvents contained in it, passed into the gas phase due to the processing temperature of around 230 ° C., which depends on the carrier material. With the degassing station, the danger of gas accumulation and the resulting explosion risk was averted.
  • the film produced in the extruder therefore consisted of 100% by weight of recycling material.
  • the gas drawn off by the degassing station was passed into a water bath, the water was examined in the laboratory before being discharged and, if necessary, neutralized in order to avoid environmental damage. Blowing off the exhaust air was thus avoided.
  • the film produced was coated in a duct system to form a carpet tape.
  • a solvent adhesive was used.
  • the processing parameters depend on the carrier and the adhesive used.
  • the adhesive tape produced at a pilot plant was produced with a web speed in the range 55 to 60 m / min at drying temperatures in the channel sections between 35 and 90 ° C.
  • the restrictions regarding the production speed depended on the plant, not the material.

Abstract

Use of a film for preparing a self-adhesive coated adhesive tape with at least one side involves using at least 10 wt.% recycled material comprising adhesive tapes and/or production remains, where the tapes comprise a carrier in the form of a polymer film. Also claimed is the prepn. of adhesive tapes as above by grinding the recycled material to an agglomerate, extruding and coating with a self-adhesive coating.

Description

Die Erfindung betrifft die Verwendung einer Folie, die aus recycelten Materialien besteht, zur Herstellung eines Klebebandes, sowie das eigentliche Herstellungsverfahren des Klebebandes.The invention relates to the use of a film, which consists of recycled materials, for the production of an adhesive tape, as well as the actual manufacturing process of the adhesive tape.

Die wiederholte Einführung Von Kunststoffabfällen in die Herstellung neuer Folien oder allgemeiner Produkte aus Kunststoff zählt zum Stand der Technik.The repeated introduction of plastic waste into the production of new films or general plastic products is part of the state of the art.

So wird beispielsweise in DE 40 20 602 C1 ein Verfahren beschrieben, mit dem duroplastische PUR-Weichschaumabfälle wiederaufbereitet werden. Die Weichschaumabfälle werden dazu zunächst einer Mühle zugeführt, in dieser auf Linsenform zerkleinert und anschließend unter Druck und erhöhter Temperatur zu reißfesten Folien verdichtet, ohne daß ein polymeres Bindemittel zugesetzt wird.
Derartige Folien werden zur Luftschalldämmung in lärmbelasteten Räumen oder Körperschalldämmung in Fahrzeugkarosserien sowie als Einleger in akustischen Feder-Masse-Systemen verwendet.
Die Verwendung dieser Folien als Trägermaterial für Klebebänder wird hingegen nicht vorgeschlagen.For example, DE 40 20 602 C1 describes a process with which thermoset PUR soft foam waste is reprocessed. For this purpose, the soft foam wastes are first fed to a mill, comminuted in a lens form in this mill and then compressed under pressure and elevated temperature to tear-resistant films without the addition of a polymeric binder.
Such films are used for airborne sound insulation in noise-laden rooms or structure-borne noise insulation in vehicle bodies and as inlays in acoustic spring-mass systems.
However, the use of these foils as carrier material for adhesive tapes is not suggested.

Weiterhin ist bekannt, mit Klebstoff beschichtete Kunststoffabfälle zu verwerten.
In EP 0 430 199 A2 wird ein Verfahren offenbart, bei dem der mit Klebstoff mehr oder minder stark beschichtete Kunststoffabfall in Gegenwart einer den Klebstoff nicht lösenden Flüssigkeit zerkleinert wird, und die von der Flüssigkeit abgetrennten Abfallteilchen auf einen solchen Restflüssigkeitsgehalt eingestellt werden, daß noch eine Trennung der Teilchen voneinander möglich ist. Vorzugsweise besteht die rieselfähige Mischung aus thermoplastischem Kunststoffabfall im wesentlichen aus Schnitzeln, die einen Flüssigkeitsgehalt von 0,5 bis 5 Gew.-% aufweisen.
Anschließend wird die Weiterverarbeitung der Schnitzel vorgeschlagen, beispielsweise in Extrudern, Kalandern oder Spritzgußmaschinen, nachdem zuvor der Klebstoff abgetrennt wurde.It is also known to recycle plastic waste coated with adhesive.
EP 0 430 199 A2 discloses a method in which the plastic waste which is more or less strongly coated with adhesive is comminuted in the presence of a liquid which does not dissolve the adhesive, and the waste particles separated from the liquid be adjusted to such a residual liquid content that separation of the particles from one another is still possible. The free-flowing mixture of thermoplastic waste material preferably consists essentially of chips which have a liquid content of 0.5 to 5% by weight.
Subsequently, the processing of the chips is proposed, for example in extruders, calenders or injection molding machines, after the adhesive has been removed beforehand.

Ebenfalls offenbart WO 92/09413 ein Verfahren zum Recyceln von mit Klebstoff beschichteten Kunststoffolien, wobei die die Folien zunächst in Schnitzelform überführt werden und dann eine Trennung des Kunststoffmaterials und des Klebstoffs vorgesehen ist. Die Folienschnitzel werden dazu zunächst in ein Lösungsmittelbad eingebracht, in dem ein Walzen oder Kneten dieser erfolgt. Daran anschließend wird der in dem Lösungsmittel dispergierte Klebstoff durch die Einwirkung von Quetschkräften von den Folienschnitzeln abgetrennt.WO 92/09413 likewise discloses a method for recycling plastic films coated with adhesive, the films first being transferred into a chip shape and then a separation of the plastic material and the adhesive being provided. For this purpose, the film chips are first introduced into a solvent bath in which they are rolled or kneaded. Then the adhesive dispersed in the solvent is separated from the film chips by the action of squeezing forces.

Beiden Verfahren gemeinsam haftet aber der Nachteil an, daß stets eine Abtrennung des Klebstoffes erfolgen muß, bevor die Weiterverwendung des eingesetzten Materials erfolgen kann, die Verfahren dadurch vielstufig, also anlagen- und kostenintensiv werden.Common to both processes is the disadvantage that the adhesive must always be removed before the material used can be reused, which means that the processes are multi-stage, that is to say they are system and cost-intensive.

Dementsprechend ist das Recycling von mit Klebstoff beschichteten Kunststoffolien, im folgenden Recyclingmaterial genannt, eher die Ausnahme. Derartige Rückstände entstehen bei der Herstellung von Klebebändern, beispielsweise die Randstreifen, die beim Zuschnitt der Mutterrollen in verkaufsfähige Einheiten anfallen, oder Fehlchargen aufgrund eines Fehlers im Produktionsprozeß. Weiterhin fallen solche Recyclingmaterialien bei der Anwendung der Klebebänder an, sei es als Verschnitt, sei als Reststücke auf einer Rolle. Diese Klebebandabschnitte können nach der Anwendung verschmutzt sein, sie können aber auch in reiner Form vorliegen.Accordingly, the recycling of plastic films coated with adhesive, hereinafter referred to as recycling material, is rather the exception. Such residues arise in the production of adhesive tapes, for example the edge strips which are produced when the mother rolls are cut into salable units, or faulty batches due to an error in the production process. Such recycling materials are also generated when using the adhesive tapes, whether as waste or as remnants on a roll. These adhesive tape sections can be dirty after use, but they can also be in pure form.

Ein Beispiel für derartige

Figure imgb0001
Abfälle" sind die im Automobilbau verwendeten selbstklebenden Folien, die während des Transports Teile des Fahrzeugs gegen äußere Einflüsse schützen. Derartige Folien weisen zumeist einen Träger auf Basis einer Kunststoffolie auf. Nach Erreichen des Zielortes werden die Fahrzeuge von den Folien befreit, die dementsprechend in großer Menge anfallen und anschließend entsorgt werden müssen.An example of such
Figure imgb0001
Waste "is the self-adhesive film used in the automotive industry, which protects parts of the vehicle against external influences during transport. Such films usually have a carrier based on a plastic film. After reaching the destination, the vehicles are freed from the foils, which are accumulated in large quantities and then have to be disposed of.

Zweites, aktuelles Beispiel aus der Automobilindustrie: Rücknahme von beim Lackieren der Kraftfahrzeuge verwendeten Schutzfolien (Stoßstangen, Stoßdämpfer u.ä.).Second, current example from the automotive industry: withdrawal of protective foils (bumpers, shock absorbers, etc.) used in painting the motor vehicles.

Die genannten Rückstände werden zumeist der Deponierung zugeführt oder durch Verbrennung thermisch verwertet, ein stoffliches Recyceln erfolgt heute eher in Ausnahmefällen.The residues mentioned are mostly sent to the landfill or thermally recovered by incineration. Today, recycling of materials takes place in exceptional cases.

Demgemäß liegt der Erfindung die Aufgabe zugrunde, eine Möglichkeit aufzuzeigen, die erwähnten Rückstände auf eine Art stofflich zu recyceln, die die besonderen Eigenschaften dieser berücksichtigt.
Gelöst wird diese Aufgabe durch die Verwendung einer Folie, wie sie in Anspruch 1 dargelegt ist, als Trägermaterial für ein Klebeband. Vorteilhafte Ausführungsformen des Klebebands sind Gegenstand der Unteransprüche.Accordingly, the invention has for its object to show a way to materially recycle the residues mentioned in a way that takes into account the special properties of these.
This object is achieved by using a film as set out in claim 1 as a carrier material for an adhesive tape. Advantageous embodiments of the adhesive tape are the subject of the dependent claims.

Demgemäß besteht die Folie, die zur Herstellung des zumindest einseitig selbstklebend beschichteten Klebebands eingesetzt wird, zu einem Anteil von zumindest 10 Gew.-% aus Recyclingmaterial.
Das Recyclingmaterial setzt sich dabei aus Klebebändern, Produktionsrückständen aus deren Herstellung sowie Klebebändern nach deren Anwendung zusammen, wobei die Klebebänder jeweils einen Träger in Form einer Kunststoffolie aufweisen.Accordingly, the film used to produce the adhesive tape, which is at least self-adhesive on at least one side, consists of at least 10% by weight of recycling material.
The recycling material is composed of adhesive tapes, production residues from their manufacture and adhesive tapes after their use, the adhesive tapes each having a carrier in the form of a plastic film.

Das Recyclingmaterial kann weiterhin zu einem Anteil von höchstens 25 Gew.-% Produktionsrückstände aus der Pflasterherstellung enthalten.The recycled material can also contain a maximum of 25% by weight of production residues from the manufacture of plasters.

Daneben können aber auch unbeschichtete Kunststoffolien dem Recyclingmaterial zugesetzt sein. Insbesondere letztere erlauben, physikalische Eigenschaften der Folie durch die Auswahl und Zusammensetzung gezielt einzustellen.In addition, however, uncoated plastic films can also be added to the recycling material. The latter in particular allow the physical properties of the film to be set in a targeted manner through the selection and composition.

Als Klebebänder oder Pflaster für das Recycling kommen solche in Frage, die Träger auf Basis einer Kunststoffolie einsetzen, die also bestehen aus

  • Polypropylen (Homo- und Copolymerisate),
  • Polyethylen (HDPE; LDPE; LLDPE; VLDPE; ULLDPE),
  • beliebige Kombinationen aus Polypropylen und den genannten Polyethylen,
  • Ethylenvinylacetat (EVA),
  • Verbindungen von Ethylenvinylacetat mit Polypropylen und/oder Polyethylen,
  • Etylen-Acrylsäure-Copolymeren (EAA),
  • Ethylen-Methacrylsäure-Copolymeren (EMA) sowie
  • Verbindungen aus Etylen-Acrylsäure-Copolymeren mit Ethylen-Methacrylsäure-Copolymeren und/oder Polypropylen und/oder Polyethylen.
Adhesive tapes or plasters for recycling are those that use carriers based on a plastic film, which therefore consist of
  • Polypropylene (homo- and copolymers),
  • Polyethylene (HDPE; LDPE; LLDPE; VLDPE; ULLDPE),
  • any combinations of polypropylene and the polyethylene mentioned,
  • Ethylene vinyl acetate (EVA),
  • Compounds of ethylene vinyl acetate with polypropylene and / or polyethylene,
  • Ethylene-acrylic acid copolymers (EAA),
  • Ethylene-methacrylic acid copolymers (EMA) as well
  • Compounds of ethylene-acrylic acid copolymers with ethylene-methacrylic acid copolymers and / or polypropylene and / or polyethylene.

Unabhängig davon, mit welchen der gängigen Klebmassen auf Lösungsmittel- Hotmelt- oder Acrylatbasis, oder mit welchen der wäßrigen Dispersionskleber die genannten Folien beschichtet sind, ist für die erfindungsgemäße Verwendung als Recyclingmaterial unerheblich.
Gegebenenfalls vorhandene Haftungsverbesserer (Vorstrich) oder Releasecoats sprechen ebenfalls nicht gegen die Verwertung.Regardless of which of the common adhesive compositions based on solvents, hotmelt or acrylate, or which of the aqueous dispersion adhesives are coated on the films mentioned, is insignificant for the use according to the invention as recycling material.
Any existing adhesion improvers (primers) or release coats also do not speak against recycling.

Der neben dem genannten Recyclingmaterial gegebenenfalls vorhandene zweite Bestandteil der Folien wird von reinen, nicht recycelten Granulaten der aufgeführten Polymere gebildet, wobei je nach späterem Einsatzzweck des Klebebandes eine gezielte Abmischung und Auswahl getroffen werden kann.The second constituent of the films, which may be present in addition to the recycling material mentioned, is formed from pure, non-recycled granules of the polymers listed, a specific mixing and selection being possible depending on the later intended use of the adhesive tape.

Eine weitere Verbesserung der Eigenschaften der Folie, insbesondere der Festigkeit, wird erreicht, indem die Folie in Längsrichtung gereckt ist, vorzugsweise im Bereich von 1:2 bis 1:10, und indem der Folie UV-Stabilisatoren und/oder Antioxidantien zugesetzt werden.A further improvement in the properties of the film, in particular the strength, is achieved by stretching the film in the longitudinal direction, preferably in the range from 1: 2 to 1:10, and by adding UV stabilizers and / or antioxidants to the film.

Auch die Coextrusion mit zusätzlichen Schichten vermag die Festigkeit zu steigern. Als Einsatzmaterialien für die Coextrusion werden o.g. Rohstoffe, ggf. mit Hilfe von Haftvermittlern verwendet.Coextrusion with additional layers can also increase strength. The above-mentioned materials for coextrusion are Raw materials, possibly used with the help of adhesion promoters.

Schließlich wird auch das Verfahren zur Herstellung eines erfindungsgemäßen Klebebandes vom Erfindungsgedanken umfaßt.
Dazu wird das Recyclingmaterial zunächst mittels eines Plastagglomerators in einer Heißagglomeration zu einem Agglomerat zerkleinert, anschließend das Agglomerat zu einer Folie extrudiert. Die Extrusion wird vorzugsweise in einem Doppelschneckenextruder mit zumindest einer Entgasungsstation durchgeführt. In dem Doppelschneckenextruder wird auch der gegebenenfalls notwendige zweite Bestandteil der Folie in Form von reinem, nicht recyceltem Granulat zugesetzt.Finally, the method for producing an adhesive tape according to the invention is also encompassed by the inventive concept.
For this purpose, the recycling material is first crushed into an agglomerate in a hot agglomeration by means of a plastic agglomerator, and then the agglomerate is extruded into a film. The extrusion is preferably carried out in a twin screw extruder performed with at least one degassing station. In the twin-screw extruder, the second component of the film which may be necessary is also added in the form of pure, non-recycled granules.

Die Zahl der Entgasungsstationen - vorzugsweise ein bis drei - ist abhängig von der Menge an Klebemasse, die auf den jeweiligen Folien des Recyclingmaterials aufgetragen ist.
Nach dieser Menge richtet sich nämlich die anfallende, und die damit zu entsorgende Abgasmenge.The number of degassing stations - preferably one to three - depends on the amount of adhesive that is applied to the respective films of the recycling material.
The amount of exhaust gas generated and the amount of exhaust gas to be disposed of depends on this amount.

Abschließend wird die Folie mit einer selbstklebenden Beschichtung ein- oder doppelseitig beschichtet.
Dazu können alle Arten von Klebern Verwendung finden,

  • Lösungsmittelklebersysteme auf Natur- und/oder Synthesekautschuksystemen,
  • Hotmeltklebersysteme,
  • Acrylatklebersysteme,
  • wäßrige Dispersionskleber,
  • Silikonklebersysteme,
  • Polyurethanklebersysteme.
Finally, the film is coated on one or both sides with a self-adhesive coating.
All types of glue can be used
  • Solvent adhesive systems on natural and / or synthetic rubber systems,
  • Hot melt adhesive systems,
  • Acrylic adhesive systems,
  • aqueous dispersion glue,
  • Silicone adhesive systems,
  • Polyurethane adhesive systems.

Falls es notwendig erscheint, können auch die erfindungsgemäßen Klebebänder Vorstriche zur Verbesserung der Haftungsfähigkeit der Kleber aufweisen. Bei Folien, die aus 70 Gew.-% bis 100 Gew.-% Recyclingmaterial bestehen, kann wegen der Restklebrigkeit des Folie auf einen Vorstrich verzichtet werden.If it appears necessary, the adhesive tapes according to the invention can also have primers to improve the adhesiveness of the adhesives. In the case of films which consist of 70% by weight to 100% by weight of recycling material, a primer can be omitted because of the residual stickiness of the film.

Bei einseitig beschichteten Klebebändern kann die andere Trägerseite mit Trennlacken versehen sein, die die Schonung der Folienoberfläche und das erleichterte Abrollen des Bandes bewirken.
Bei doppelseitig beschichteten Klebebändern wird ein Trennpapier zwecks der Wiederabrollbarkeit des Klebebands eingesetzt.In the case of adhesive tapes coated on one side, the other backing side can be provided with release lacquers, which protect the film surface and facilitate the unrolling of the tape.
In the case of double-sided coated adhesive tapes, a release paper is used to ensure that the adhesive tape can be unrolled again.

Zum Einfärben der Trägenfolie der Klebebänder können Farbbatches und/oder Coextrusionsverfahren eingesetzt werden.Color batches and / or coextrusion processes can be used to color the backing film of the adhesive tapes.

Zur besseren Verankerung der aufgeführten Beschichtungsmaterialien - einschließlich von Druckfarben - ist darüber hinaus eine Oberflächenvorbehandlung (Corona-, Flamm- oder Plasmavorbehandlung) vorgesehen.A surface pretreatment (corona, flame or plasma pretreatment) is also provided to better anchor the listed coating materials - including printing inks.

Die Verarbeitungsparameter (Extrusionstemperatur, Kühl-, Reck- und Fixierbedingungen) für die unterschiedlichen Materialzusammensetzungen werden für jede Mischung gezielt vorgegeben. Die Ermittlung der hierfür notwendigen Daten erfolgt mit dem Ziel der Reproduzierbarkeit in Versuchen.The processing parameters (extrusion temperature, cooling, stretching and fixing conditions) for the different material compositions are specified for each mixture. The data necessary for this is determined in experiments with the aim of reproducibility.

Die erfindungsgemäßen Folien eignen sich bevorzugt zur Herstellung von Klebebändern, an die geringe optische Anforderungen gestellt werden. Vorzugsweise erfolgt der Einsatz als Verpackungsklebebänder, Teppichverlegebänder, Abdeckbänder, Aufreißstreifen und Tragegriffe.The films according to the invention are preferably suitable for the production of adhesive tapes which have low optical requirements. It is preferably used as packaging adhesive tapes, carpet laying tapes, masking tapes, tear strips and carrying handles.

Folien, die aus den aufgeführten Produktionsrückständen hergestellt werden, sind als Träger für Klebebänder hervorragend geeignet, was auch für den Fachmann nicht vorherzusehen war.
Durch den Zusatz von neuen Edukten zu den recycelten Klebebänder lassen sich abhängig von der Art und der Qualität dieser Klebebänder die Eigenschaften der neuen Folie gezielt einstellen. Damit einher geht die Tatsache, daß somit auch unmittelbar auf die Güte des neuen Klebebandes Einfluß genommen wird.
Aber auch Folien, die zu 100 Gew.-% aus Recyclingmaterial bestehen, können als Träger Verwendung finden, insbesondere wenn die späteren Anforderungen an das Produkt nicht zu hoch sind.Films that are produced from the production residues listed are excellently suitable as carriers for adhesive tapes, which was also unforeseeable for the person skilled in the art.
By adding new starting materials to the recycled adhesive tapes, the properties of the new film can be specifically adjusted depending on the type and quality of these adhesive tapes. This goes hand in hand with the fact that the quality of the new adhesive tape is also directly influenced.
However, films that consist of 100% by weight of recycled material can also be used as carriers, especially if the later requirements for the product are not too high.

Somit ist eine Möglichkeit, die in erheblichen Mengen anfallenden Produktionsrückstände aus der Klebeband- und Pflasterherstellung stofflich in großem Umfang zu verwerten. Dabei werden ökologische und ökonomische Gesichtspunkte berücksichtigt, wie beispielsweise die Forderung nach der Reduzierung der Abfallmengen. Zum einen werden die bei der Herstellung von Klebebändern entstehenden Abfallmengen reduziert, gleichzeitig damit auch die anfallenden Entsorgungskosten.This makes it possible to utilize the large quantities of production residues from adhesive tape and plaster production. Ecological and economic considerations are taken into account, such as the requirement to reduce the amount of waste. On the one hand, the amount of waste generated in the production of adhesive tapes is reduced, and at the same time the waste disposal costs incurred.

Das erfindungsgemäße Klebeband kann selbst auch wieder recycelt werden.The adhesive tape according to the invention can itself be recycled again.

Im folgenden soll anhand eines Beispiels die Herstellung eines erfindungsgemäßen Klebebands dargestellt werden, ohne in irgendeiner Form einschränkend wirken zu sollen.In the following, the production of an adhesive tape according to the invention is to be illustrated using an example, without being intended to have any restrictive effect.

Beispielexample 1. Herstellung der Recycling-Folie:1. Production of the recycling film:

Mit Klebemittel beschichtete Reststoffe aus der Klebebandherstellung, und zwar tesapack ® 125 braun und farblos sowie tesapack ® 4287, 4288, 4289 und 4298, wurden mittels eines Plastagglomerators in einer Heißagglomerisation zu einem riesel- und dosierfähigen Agglomerat zerkleinert. Zzur Durchführung wurde ein Gerät der Firma Pallmann in Zweibrücken verwendet, das sich aus einer Schneidmühle (Typ PS 4-5/F WR 3), einem Plastagglomerator (Typ PFV9 und einem Heißgranulator (Typ PS 4-5/F 5 S) zusammensetzt.
Das Trägermaterial wurde bei den genannten Produkten gebildet von einer Polypropylenfolie aus Copolymeren, die Beschichtung bestand aus Lösungsmittelklebern auf Naturkautschukbasis und synthetischen Kohlenwasserstoffharzen.Residues from adhesive tape production coated with adhesive, namely tesapack ® 125 brown and colorless as well as tesapack ® 4287, 4288, 4289 and 4298, were crushed by means of a plastic agglomerator in hot agglomeration to a free-flowing and meterable agglomerate. A device from Pallmann in Zweibrücken was used for the implementation, which consists of a granulator (type PS 4-5 / F WR 3), a plastic agglomerator (type PFV9 and a hot granulator (type PS 4-5 / F 5 S)).
The carrier material for the products mentioned was formed from a polypropylene film made from copolymers, the coating consisted of solvent-based adhesives based on natural rubber and synthetic hydrocarbon resins.

Das Agglomerat wurde zu einer Folie extrudiert. Dabei kam ein Doppelschneckenextruder (Typ D2 - 72-18 17V der Firma esde in Bad Oeynhausen) mit einer Entgasungsstation zum Einsatz, wobei letztere mit Unterdruck betrieben wird. Die Entgasung wurde erforderlich, weil Teile der Klebemasse, die in dieser enthaltenen Restlösungsmittel, aufgrund der vom Trägermaterial abhängigen Verarbeitungstemperatur von um 230 °C in die Gasphase übergingen. Mit der Entgasungsstation war die Gefahr der Gasansammlung und der daraus resultierenden Explosionsgefahr gebannt.
Die in dem Extruder hergestellte Folie bestand also zu 100 Gew.-% aus Recyclingmaterial.The agglomerate was extruded into a film. A twin-screw extruder (type D2 - 72-18 17V from esde in Bad Oeynhausen) with a degassing station was used, the latter being operated with negative pressure. The degassing became necessary because parts of the adhesive, the residual solvents contained in it, passed into the gas phase due to the processing temperature of around 230 ° C., which depends on the carrier material. With the degassing station, the danger of gas accumulation and the resulting explosion risk was averted.
The film produced in the extruder therefore consisted of 100% by weight of recycling material.

Das durch die Entgasungsstation abgezogene Gas wurde in ein Wasserbad geleitet, das Wasser wurde vor dem Ablassen im Labor untersucht und gegebenenfalls neutralisiert, um Umweltschäden zu vermeiden. Ein Abblasen der Abluft wurde somit vermieden.The gas drawn off by the degassing station was passed into a water bath, the water was examined in the laboratory before being discharged and, if necessary, neutralized in order to avoid environmental damage. Blowing off the exhaust air was thus avoided.

2. Beschichtung der Recycling-Folie2. Coating of the recycling film

Die hergestellte Folie wurde in einer Kanalanlage zu einem Teppichklebeband beschichtet. Es wurde ein Lösungsmittelkleber verwendet.The film produced was coated in a duct system to form a carpet tape. A solvent adhesive was used.

Die Verarbeitungsparameter sind vom Träger und von der eingesetzten Klebemasse abhängig. Das an einer Technikumsanlage hergestellte Klebeband wurde mit einer Bahngeschwindigkeit im Bereich 55 bis 60 m/min bei Trocknungstemperaturen in den Kanalsektionen zwischen 35 und 90 °C hergestellt. Die Beschränkungen bezüglich der Produktionsgeschwindigkeit waren anlagen-, nicht materialabhängig.The processing parameters depend on the carrier and the adhesive used. The adhesive tape produced at a pilot plant was produced with a web speed in the range 55 to 60 m / min at drying temperatures in the channel sections between 35 and 90 ° C. The restrictions regarding the production speed depended on the plant, not the material.

Claims (8)

Verwendung einer Folie zur Herstellung eines zumindest einseitig selbstklebend beschichteten Klebebandes, dadurch gekennzeichnet, daß die Folie zu einem Anteil von mindestens 10 Gew.-% aus Recyclingmaterial besteht, das aus Klebebändern und/oder Produktionsrückständen aus deren Herstellung sowie Klebebändern nach deren Anwendung besteht, wobei die Klebebänder jeweils einen Träger in Form einer Kunststoffolie aufweisen.Use of a film for the production of an adhesive tape which is at least self-adhesive on one side, characterized in that the film comprises at least 10% by weight of recycling material which consists of adhesive tapes and / or production residues from their manufacture and adhesive tapes after their use, where the adhesive tapes each have a carrier in the form of a plastic film. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß
das Recyclingmaterial zu einem Anteil von höchstens 25 Gew.-% Produktionsrückstände aus der Pflasterherstellung enthält.Use according to claim 1, characterized in that
the recycling material contains a maximum of 25% by weight of production residues from the manufacture of plasters. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß
das Recyclingmaterial versetzt ist mit unbeschichteten Kunststoffolien.Use according to claim 1, characterized in that
the recycling material is mixed with uncoated plastic films. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß
die Folie in Längsrichtung gereckt ist, insbesondere im Bereich von 1:2 bis 1:10.Use according to claim 1, characterized in that
the film is stretched in the longitudinal direction, in particular in the range from 1: 2 to 1:10. Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß
der Folie UV-Stabilisatoren und/oder Antioxidantien zugesetzt sind.Use according to claim 1, characterized in that
UV stabilizers and / or antioxidants are added to the film. Verfahren zur Herstellung eines Klebebandes nach Anspruch 1,
wobei das Recyclingmaterial zunächst mittels eines Plastagglomerators in einer Heißagglomeration zu einem Agglomerat zerkleinert wird,
wobei das Agglomerat zu einer Folie extrudiert wird,
wobei die Folie mit einer selbstklebenden Beschichtung beschichtet wird.A method for producing an adhesive tape according to claim 1,
wherein the recycling material is first crushed into an agglomerate in a hot agglomeration by means of a plastic agglomerator,
the agglomerate being extruded into a film,
the film being coated with a self-adhesive coating. Verfahren zur Herstellung eines Klebebandes nach Anspruch 1, dadurch gekennzeichnet, daß
die Extrusion in einem Doppelschneckenextruder mit zumindest einer Entgasungsstation durchgeführt wird.A method for producing an adhesive tape according to claim 1, characterized in that
the extrusion is carried out in a twin-screw extruder with at least one degassing station. Verfahren zur Herstellung eines Klebebandes nach Anspruch 1, dadurch gekennzeichnet, daß
dem Recyclingmaterial in einem Einschnecken- oder Doppelschneckenextruder reines, nicht recyceltes Kunststoffgranulat zugesetzt wird.A method for producing an adhesive tape according to claim 1, characterized in that
Pure, non-recycled plastic granulate is added to the recycling material in a single-screw or twin-screw extruder.
EP19970117440 1996-10-19 1997-10-09 Use of foils of recycling material for preparing adhesive taps Withdrawn EP0839621A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996143239 DE19643239C2 (en) 1996-10-19 1996-10-19 Use of a film made from recycling material for the production of adhesive tapes and method for producing this film
DE19643239 1996-10-19

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EP0839621A2 true EP0839621A2 (en) 1998-05-06
EP0839621A3 EP0839621A3 (en) 1998-12-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001066665A1 (en) * 2000-03-07 2001-09-13 Pago Limited Method of manufacturing adhesive tapes by using waste adhesive label backings
FR2870477A1 (en) * 2004-05-19 2005-11-25 J & M Coumpound Soc Par Action METHOD OF COMPOUNDING EXTRUSION RECYCLING OF POLYOLEFINIC FILM WASTE INCLUDING HIGHLY PRINTED FILES
US20120279075A1 (en) * 2011-05-02 2012-11-08 Amsel Klaus Guenter Improved battery housing for battery-powered device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012101481A1 (en) * 2012-02-24 2013-08-29 Wolfgang Leitz Method and arrangement for recycling adhesive-containing film residues
DE102012215133A1 (en) 2012-08-24 2014-02-27 Tesa Se Strapping Tape
EP4141081A1 (en) * 2021-08-30 2023-03-01 Hueck Folien Gesellschaft m.b.H. Adhesive element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254923A2 (en) * 1986-07-14 1988-02-03 The Dow Chemical Company Coextruded plastic film label for in-mold-labeling
EP0458484A2 (en) * 1989-05-26 1991-11-27 The Kendall Company Rubber-based adhesive tapes
WO1996037568A1 (en) * 1995-05-22 1996-11-28 Minnesota Mining And Manufacturing Company Protective adhesive article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3362926B2 (en) * 1993-09-17 2003-01-07 ニチバン株式会社 Molded product with reused ears of adhesive tape

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254923A2 (en) * 1986-07-14 1988-02-03 The Dow Chemical Company Coextruded plastic film label for in-mold-labeling
EP0458484A2 (en) * 1989-05-26 1991-11-27 The Kendall Company Rubber-based adhesive tapes
WO1996037568A1 (en) * 1995-05-22 1996-11-28 Minnesota Mining And Manufacturing Company Protective adhesive article

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 095, no. 006, 31. Juli 1995 & JP 07 080838 A (NICHIBAN CO LTD), 28. März 1995 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001066665A1 (en) * 2000-03-07 2001-09-13 Pago Limited Method of manufacturing adhesive tapes by using waste adhesive label backings
FR2870477A1 (en) * 2004-05-19 2005-11-25 J & M Coumpound Soc Par Action METHOD OF COMPOUNDING EXTRUSION RECYCLING OF POLYOLEFINIC FILM WASTE INCLUDING HIGHLY PRINTED FILES
WO2005121231A1 (en) * 2004-05-19 2005-12-22 J & M Compound (S.A.S) Method for recycling the waste of printed polyolefinic films by compounding extrusion
US20120279075A1 (en) * 2011-05-02 2012-11-08 Amsel Klaus Guenter Improved battery housing for battery-powered device
CN103503193A (en) * 2011-05-02 2014-01-08 吉列公司 Improved battery housing for battery-powered devices

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DE19643239C2 (en) 1998-10-01
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